STC Rating for Rockwool

Started by flipwhip41 on 29 March 2005. 3 replies.

Originally posted at johnlsayers.com, topic 3493.

flipwhip4129 March 2005#1

Does anyone have an approximate STC rating for rockwool 50mm or 100mm?

knightfly30 March 2005#2

ZERO - Absorbents by themselves don't BLOCK sound, they only ABSORB it. When used inside a wall as part of a complete system, insulation can make up to about 10 dB difference in the overall TL of the wall... Steve

flipwhip4130 March 2005#3

Thanks that was what I was asking, guess I worded it wrong. Thanks

Dan Fitzpatrick31 March 2005#4

this page should help. http://www.bobgolds.com./AbsorptionCoefficients.htm